Packaging device with fake-proof adhesive tape

ABSTRACT

A packaging device with a fake-proof adhesive tape is proposed, including a body; a cover integrally formed with the body, for sealing an open end of the body; a fake-proof adhesive tape containing a thin sheet of substrate, and attached to the cover for adhering the cover to the body; a first adhesive layer applied over a first surface of the substrate, for attaching the fake-proof adhesive tape onto the cover; a fake-proof mark layer printed on a second surface of the substrate, and being adherent with the substrate; a colored layer for covering the mark layer and the second surface of the substrate; a transparent or semi-transparent viscous film applied over the colored layer; and a second adhesive layer formed on the viscous film, for adhering the fake-proof adhesive tape to the body.

FIELD OF THE INVENTION

[0001] The present invention relates to fake-proof packaging devices, and more particularly, to a packaging device with a fake-proof adhesive tape for sealing an open end of the packaging device.

BACKGROUND OF THE INVENTION

[0002] A conventional packaging device such as a bag or envelope for express delivery, as shown in FIG. 1, includes a body 10′, a cover 11′ integrally formed with the body 10′ for sealing an open end 100 of the body 10′, a twin adhesive tape 12 attached to an inner surface of the cover 11′, and a sealing tape 13 smaller in width than the twin adhesive tape 12 and adhered to the body 10′ at a position to be coupled to the cover 11′. A non-adhesive film (not shown) is normally provided on the twin adhesive tape 12 and sealing tape 13 respectively; when it is ready to seal the open end 100 of the body 10′, the non-adhesive films are removed from the twin adhesive tape 12 and sealing tape 13, allowing the twin adhesive tape 12 to be coupled to the sealing tape 13 for sealing the open end 100 of the body 10′ by the cover 11′.

[0003] However, in the case of confidential documents being delivered, the above packaging device fails to provide a security or fake-proof effect. In other words if a person other than a designate receiver opens the packaging device, he or she can easily re-seal the open end 100 of the body 10′ by means of the twin adhesive tape 12 and sealing tape 13 with no indication showing the unauthorized opening of the packaging device

SUMMARY OF THE INVENTION

[0004] A primary objective of the present invention is to provide a packaging device with a fake-proof adhesive tape for sealing an open end of the packaging device, whereby if a person other than a designate receiver forcibly opens the packaging device, the fake-proof adhesive tape is split apart with a substrate thereof being peeled away from the rest of the fake-proof adhesive tape, making warning marks embedded in the adhesive tape exposed and indicate the unauthorized opening of packaging device; once the fake-proof adhesive tape is peeled apart, it fails to restore adherence between the substrate and the rest of the fake-proof adhesive tape, making the packaging device unable to be re-sealed, such that the packaging device can desirably achieve both security and fake-proof effects.

[0005] In accordance with the foregoing and other objectives, the present invention provides a packaging device with a fake-proof adhesive tape, comprising: a body, a cover connected to the body for sealing an open end of the body, and the fake-proof adhesive tape for adhering the cover to the body. The fake-proof adhesive tape is composed of a substrate having a first surface and a second surface; a mark layer made of an adherent material and applied on part of the second surface of the substrate; a colored layer made of colored inks, and applied over the mark layer and part of the second surface of the substrate uncovered by the mark layer; a viscous film attached to the colored layer; a first adhesive layer applied over the first surface of the substrate; and a second adhesive layer formed on the viscous film; wherein adhesion between the colored layer and mark layer is lager than that between the colored layer and viscous film, adhesion between the substrate and mark layer is larger than that between the viscous film and colored layer, and adhesion between the colored layer and substrate is smaller than that between the colored layer and viscous film. The first adhesive layer can be attached to the cover for adhering the fake-proof adhesive tape to the cover, and the second adhesive layer is attached to the body for adhering the fake-proof adhesive tape to the body. Alternatively, the first adhesive layer can be affixed to the body, and the second adhesive layer is affixed to the cover allowing the body to be sealed via the fake-proof adhesive tape by the cover.

[0006] When the fake-proof adhesive tape is peeled apart, the colored layer is split to allow part of the colored layer on the mark layer to remain together with the substrate, and part of colored layer corresponding in position to area on the substrate uncovered by the mark layer to remain attached to the viscous film, making warning marks or patterns formed by the colored layer to show on the substrate and viscous film and indicates unauthorized opening of the packaging device. Moreover, as the viscous layer is not adhesive enough to restore adherence to the substrate once the fake-proof adhesive tape is peeled apart, this allows only one time of sealing between the cover and body of the packaging device, thereby providing security and fake-proof effects.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention can be more fully understood by reading the following detailed description of the preferred embodiments, with reference made to the accompanying drawings wherein:

[0008]FIG. 1 (PRIOR ART) is a schematic diagram showing an open end of a conventional packaging device;

[0009]FIG. 2 is a cross-sectional view of an open end of a packaging device according to the invention;

[0010]FIG. 3 is a cross-sectional view of a fake-proof adhesive tape attached to the open end of the packaging device according to the invention;

[0011]FIG. 4 is a cross-sectional view showing a condition during peeling off the fake-proof adhesive tape;

[0012]FIG. 5 is a cross-sectional view showing a condition of the fake-proof adhesive tape after being peeled off;

[0013]FIG. 6 is a schematic diagram a portion of the fake-proof adhesive tape after being peeled off remaining on a cover of the packaging device; and

[0014]FIG. 7 is a schematic diagram of a substrate with the fake-proof adhesive tape being peeled off.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] As shown in FIGS. 2 and 3, a packaging device with a fake-proof adhesive tape according to the present invention is composed of a body 10 and a cover II formed at an upper end of the body 10 for sealing an open end of the body 10. A fake-proof adhesive tape is provided at the open end of the cover 11, and consists of a substrate 1 made of a plastic thin layer; a mark layer 2 printed on part of a second surface 1 b of the substrate 1; a colored layer 3 applied over the mark layer 2 and part of the second surface 1 b of the substrate 1 uncovered by the mark layer 2; a transparent or semi-transparent viscous film 4 formed over the colored layer 3; a second adhesive layer 5 made of an adhesive applied over the viscous film 4; and a first adhesive layer 6 made of an adhesive formed over the first surface 1 a of the substrate 1.

[0016] The substrate 1 is made of a transparent or semi-transparent plastic material, which allows warning marks or patterns formed on the second surface 1 b of the substrate 1 to be easily observed when the substrate 1 is removed.

[0017] The mark layer 2 is made of an adhesive resin material similar in color and transparency to the substrate 1, so as to allow warning marks patterns or words to be printed on the second surface 1 b of the substrate 1 by a conventional printing process.

[0018] The colored layer 3 forms the warning marks patterns or words by using ink of a color that produces considerably strong contrast to the substrate 1 and the mark layer 2. This allows the warning marks or patterns to appear on the viscous film 4 or the substrate 1 when the substrate 1 is detached from the fake-proof adhesive tape after opening or lifting the cover 11 to unseal the open end of the body 10, so as to inform a designate receiver for the packaging device about unauthorized opening of the body 10 according to appearance of the warning marks or patterns. The colored layer 3 is applied over the second surface 1 b of the substrate 1, the mark layer 2 and recessed portions 20 (as shown in FIG. 5) uncovered by the mark layer 2.

[0019] The viscous film 4 is a thin film, allowing part of the colored layer 3 formed on the mark layer 2 to be retained on a lop surface of the viscous film 4 and show the warning marks and patterns when the substrate 1 is peeled from the fake-proof adhesive tape. The second adhesive layer 5 is applied on a bottom surface of the viscous film 4 to thereby adhere the viscous film 4 to the open end of the body 10.

[0020] The second adhesive layer 5 is formed by applying an adhesive over the bottom surface of the viscous film 4, and used to attach the fake-proof adhesive tape to the open end of the body 10 or the packaging device.

[0021] As shown in FIG. 3, the fake-proof adhesive tape is used by cutting a piece of the fake-proof adhesive tape of an appropriate length and attaching the piece to the open end of the body 10 in a way similar to a conventional adhesive tape. The first adhesive layer 6 applied on the substrate 10 f the fake-proof adhesive tape is used to adhere the substrate 1 to the cover 11 or to the open end of the body 10. Preferably, the first adhesive layer 6 of the fake-proof adhesive tape is attached to the cover 1, and the second adhesive layer 5 formed over the viscous film 4 is affixed to the open end of the body 10, making the body 11 in a condition of being sealed by the cover 11.

[0022] Adhesion between component layers of the fake-proof adhesive layer is detailed as follows. Adhesion between the colored layer 3 and mark layer 2 is larger than that between the colored layer 3 and viscous film 4. Further, adhesion between the substrate 1 and mark layer 2 is larger than that between the viscous film 4 and colored layer 3. And, adhesion between the colored layer 3 and substrate 1 is smaller than that between the colored layer 3 and viscous layer 4.

[0023] As shown in FIG. 4 or 5, if the sealed packaging device is forcibly or unauthorizedly opened and the fake-proof adhesive tape is peeled apart, in accordance with the above adhesion correlation between the component layers of the fake-proof adhesive tape, the mark layer 2 and part of the colored layer 3 adhered to the mark layer 2 would be detached together with the substrate 1 from the fake-proof adhesive tape in accompany with lifting or opening the cover 11 with respect to the body 10, whereas part of the colored layer 3 corresponding in position to the recessed portions 20 would remain attached to the viscous film 4 that also keeps adhered to the open end of the body 10 by means of the second adhesive layer 5.

[0024] Consequently, as shown in FIG. 6, from a view of the viscous film 4 adhered to the open end of the body 10, the part of the colored layer 3 remaining on the viscous film 4 can be observed and shows the warning marks, patterns or words. Therefore, with reveal of the warning marks, patterns or words, it indicates peeling-apart of the fake-proof adhesive tape. On the other hand, as shown in FIG. 7, the part of the colored layer 3 remaining on the mark layer 2 attached to the substrate 1 allows a complementary pattern of the warning marks or words to appear on the second surface 1 b of the substrate 1 with respect to the pattern shown in FIG. 6.

[0025] After the fake-proof adhesive tape is peeled apart, although the viscous film 4 still remains adhered to the open end of the body 10 via the second adhesive layer 5, however the viscous film 4 itself is not adhesive enough to restore adherence to the substrate 1; in other words, once the fake-proof adhesive tape is peeled apart, it fails to be re-sealed again which allows only one time of sealing between the body 10 and the cover 11 and thereby provides security and fake-proof effects.

[0026] Besides, the substrate 1 may also be made of a colored plastic material, and the mark layer 2 is not particularly limited in respect of its transparency and color. In this case, however, the colored layer 3 should have a color in contrast to the viscous film 4 for detecting the warning marks or patterns indicating unauthorized opening of the packaging device once the substrate 1 is peeled off from the fake-proof adhesive tape.

[0027] The invention has been described using exemplary preferred embodiments. However, it is to be understood that the scope of the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements. The scope of the claims, therefore, should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements. 

What is claimed is:
 1. A packaging device with a fake-proof adhesive tape, comprising: a body, a cover connected to the body for sealing an open end of the body, and the fake-proof adhesive tape for adhering the cover to the body, the fake-proof adhesive tape comprising: a substrate having a first surface and a second surface; a mark layer made of an adherent material and applied on part of the second surface of the substrate; a colored layer made of colored inks, and applied over the mark layer and part of the second surface of the substrate uncovered by the mark layer; a viscous film attached to the colored layer; a first adhesive layer applied over the first surface of the substrate for adhering the fake-proof adhesive tape to the cover; and a second adhesive layer formed on the viscous film for adhering the fake-proof adhesive tape to the body; wherein adhesion between the colored layer and mark layer is lager than that between the colored layer and viscous film, adhesion between the substrate and mark layer is larger than that between the viscous film and colored layer, and adhesion between the colored layer and substrate is smaller than that between the colored layer and viscous film.
 2. The packaging device with a fake-proof adhesive tape of claim 1, wherein the colored layer is of a color having sufficient contrast to the substrate or mark layer.
 3. The packaging device with a fake-proof adhesive tape of claim 1, wherein the colored layer is of a color having sufficient contrast to the viscous film.
 4. The packaging device with a fake-proof adhesive tape of claim 1, wherein the cover is integrally formed with the body.
 5. The packaging device with a fake-proof adhesive tape of claim 1, wherein the substrate is a thin plastic layer.
 6. The packaging device with a fake-proof adhesive tape of claim 1, wherein the substrate is transparent or semi-transparent.
 7. The packaging device with a fake-proof adhesive tape of claim 6, wherein the mark layer is similar in color and transparency to the substrate.
 8. The packaging device with a fake-proof adhesive tape of claim 1, wherein the viscous film is transparent or semi-transparent.
 9. The packaging device with a fake-proof adhesive tape of claim 1, wherein with the fake-proof adhesive tape being peeled apart, the colored layer is split to allow part of the colored layer on the mark layer to remain together with the substrate, and part of colored layer corresponding in position to area on the substrate uncovered by the mark layer to remain attached to the viscous film.
 10. A packaging device with a fake-proof adhesive tape, comprising: a body, a cover connected to the body for sealing an open end of the body, and the fake-proof adhesive tape for adhering the cover to the body, the fake-proof adhesive tape comprising: a substrate having a first surface and a second surface; a mark layer made of an adherent material and applied on part of the second surface of the substrate; a colored layer made of colored inks, and applied over the mark layer and part of the second surface of the substrate uncovered by the mark layer; a viscous film attached to the colored layer; a first adhesive layer applied over the first surface of the substrate for adhering the fake-proof adhesive tape to the body; and a second adhesive layer formed on the viscous film for adhering the fake-proof adhesive tape to the cover; wherein adhesion between the colored layer and mark layer is lager than that between the colored layer and viscous film, adhesion between the substrate and mark layer is larger than that between the viscous film and colored layer, and adhesion between the colored layer and substrate is smaller than that between the colored layer and viscous film.
 11. The packaging device with a fake-proof adhesive tape of claim 10, wherein the colored layer is of a color having sufficient contrast to the substrate or mark layer.
 12. The packaging device with a fake-proof adhesive tape of claim 10, wherein the colored layer is of a color having sufficient contrast to the viscous film.
 13. The packaging device with a fake-proof adhesive tape of claim 10, wherein the cover is integrally formed with the body.
 14. The packaging device with a fake-proof adhesive tape of claim 10, wherein the substrate is a thin plastic layer.
 15. The packaging device with a fake-proof adhesive tape of claim 10, wherein the substrate is transparent or semi-transparent.
 16. The packaging device with a fake-proof adhesive tape of claim 15, wherein the mark layer is similar in color and transparency to the substrate.
 17. The packaging device with a fake-proof adhesive tape of claim 10, wherein the viscous film is transparent or semi-transparent.
 18. The packaging device with a fake-proof adhesive tape of claim 10, wherein with the fake-proof adhesive tape being peeled apart, the colored layer is split to allow part of the colored layer on the mark layer to remain together with the substrate, and part of colored layer corresponding in position to area on the substrate uncovered by the mark layer to remain attached to the viscous film. 